Demonstration-picture for multicolored printing.



No. 799,609. PATENTED SEPT. 12, 1905.

B. LUDWIG. DEMONSTRATION PICTURE FOR MULTICOLORBD PRINTING.

APPLICATION FILED AUG. 24, 1904. v

1 1; y iW colored Printing, of which the following is a view similar toFig.1, showing the several tare for demonstrating the fact, well knownprinted in the three complementary colors UNITED l, 01* NEW YORK, N. Y.

DEMONSTRATION-PICTURE FOR MULTICOLORED PRINTING- Specification ofLetters Patent.

Patented Sept. 12, 1905.

Application filed August 24, 1904. Serial No. 222,013.

To mil whom it may concern: Be itknown that 1, BERNIIAIH) Luowuaacitizen of the United States, residing in New York, borough of Bronx, inthe State of New York, have-invented certain new and useful Improvementsin l)emonstration-Pictures for Multispecilication.

This invention relates to an improved picir: physical science, that whena picture is yellow, red, and blue all the shades of difl'erent colorsare produced.

The object of this invention is to demonstrate the blending of thecomplementary coiors and the production of a multicolored pic-. turetherefrom in a very simple and effective manner, so that thedemonstration-picture can be used for educational purposes, also forpractical purposes in the arts; and the invention consists of adcmonstration-picture for illustrating multicolor-printing comprising asuitable foundation-board and a plurality of su perposed transparentflexi ble sheets printed in differentcomplementary colors.

The invention also consists in other novel features to be hereinafterdescribed and claimed.

In the accompanying drawings, Figure 1 is a plan View of my improveddemonstrationpicture for multicolor-printing. Fig. 2 is a verticallongitudinal section of the picture, showing two superposed transparentsheets.

Fig. 3 is a like section showing three superposed transparent sheets;and Fig. 4 is a plan sheets placed out of register with each other.

Similar letters of reference indicate corresponding parts' throughouttheseveral views.

In making my improved demonstration-pictures the color=platesrepresenting the three complementary colors yellow, red, and bluearefirst prepared in the well-known manner from colored negatives of theoriginal pictures to be printed. From the yeilow colorplate a print ismade on a suitable foundation-board u, of pastehoard or similar flexibleopaque material, while the remaining complementary colorsare printed ontransparent sheets? and c, which are superposed in proper register abovethe foumlation-board so that the three colors overlap each other andpro- The superposed sheets of transparent ma terial are attached to thefoundation-board by a suitable fastening device (Z, so that thedifferent complementary colors are placed in correct register with eachother. device may consist of one or more fasteners of the type shown orany other fastening-device by which the proper register of thecolorplates is obtained. By lifting the transparent superposed sheetsaway'lrom each other and from the foundation-board the three prints,each in its own color, can be readily inspected, while the completemulticolored picture is produced by superposing the sheets and blendingthe ditferent colors into the picture that has been reproduced.

The foundation-board is preferably made of white pasteboard, as stated,and the superposed transparent or other transparent flexible material.

This fastening plates of celluloid, gelatin,

superposed transparent sheets an entirelywhite foundationboard It andthree superposed transparent color-sheets m- 02 0 may be used, as shownin Fig. 3. In any case the fact that a multicolored picture of greatdelicacy in coloring is produced by the blending of three pictures, eachmadein individual and complementary colors, can be readily demon stratedto the eye.

Havingthus described my invention, Iclaim as new and desire to secure byLetters Patent 1. A demonstration-picture for multicolor printing.comprising a foundation-board, and a'plurality of superposed transparentflexible sheets printed in different complementary colors.

2. A demonstration-picture for multicolorprinting, comprising an opaquefoundationboard, and a plurality of superposed transparent flexiblesheets printed in different complementary colors.

3. A demonstration-picture for multicolorprinting, comprising an opaquefoundationboard printed in one of the complementary colors, and aplurality of superposed transparent flexible sheets printed in the othercomplementary colors.

4. A demonstration-picture for multicolorprinting, comprising an opaquefoundationboard, a plurality of superposed transparent flexible sheetsprovlded with color-prints in complementary colors, and means forattach- 5 ing said sheets to said foundation-boardso as to permit saidcolor-prints to be placed in or out of register with each other.

In testimony that I claim the foregoing as my invention 1 have signed myname in presence of two subscribing witnesses.

' BERNHARD LUDWIG. Witnesses:

PAUL GOEPEL, HENRY J SUHRBIER.

